When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits.
310 × 20 = 6200
6200 already has two significant digits.
The two.
Two. The decimal indicates that the zero is significant otherwise it wouldn't be a significant digit.
Potassium has a gram atomic mass of 39.1, to three significant digits (one more significant digit than "20 meq" has). Therefore, one meq = 39.1 mg, and 20 meq = 20(39.1) = 7.8 X 102 mg, to the justified number of significant digits.
62 is 20 percent of 310.
310
The two.
The number 20 has two significant figures. In scientific notation, it would be written as 2.0 x 10^1, indicating that both digits are significant. Significant figures are the digits in a number that carry meaning contributing to its precision.
Two. The decimal indicates that the zero is significant otherwise it wouldn't be a significant digit.
310+205 of 310=310+ 20/100*310=310+62=372
0.20 X 75.00 = 15, to the justified number of significant digits.
Potassium has a gram atomic mass of 39.1, to three significant digits (one more significant digit than "20 meq" has). Therefore, one meq = 39.1 mg, and 20 meq = 20(39.1) = 7.8 X 102 mg, to the justified number of significant digits.
62 is 20 percent of 310.
310-20=290
15.5
The proposition is false. From 1 to 99, the digit 0 is NOT repeated 20 times!
3.14159265358979323846 are the first 20 digits of pi.
310